Each of the following questions has a different figures with Question mark/s. Replace the question mark/s by choosing the correct response from amongst the alternatives given.

Options

A. 3
B. 19
C. 21
D. 17

Answer

D

Explanation

The pattern is as follows: Middle number divides all other numbers in figure. In the first fig., 96, 64 and 120 are divisible by 8. In the second fig., 78, 156 and 39 are divisible by 13. In the third fig., 136, 221 and 68 are divisible by 17. Therefore, missing number = 17